Here is the full list of all 46 Deadfall Adventures achievements worth 1,000 gamerscore.
Found the entrance to the pyramid
Found a secret treasure at the very beginning of the game
Finish the Adventure campaign
Make your way through the Sakkara pyramid
Travel through the Arctic wastelands
Defeat Stein
Create a picture with light at the Ice Temple
Fight your way through the Arctic Mines
Explore the Mayan Tombs
Leave the Mayan Tombs
Make your way through the Mayan City
Beat the guardian of Xibalba
Fight the final foe
Collect 5 unique Power of Light treasures
Collect 10 unique Power of Life treasures
Collect 15 unique Power of the Warrior treasures
Collect 50 unique treasures in Adventure mode
Escape from the gas trap inside the Sakkara pyramid
Disable the crusher trap in the Arctic Base level
Solve the final puzzle at the Arctic Caves level in an alternate way and collect a special treasure
Unlock a hidden treasure by moving minecarts in the Mines
Explore the secret cave in the Mayan Jungle
Use the elevator puzzle to reach the treasure in Mayan Tombs
Retrieve a treasure from a mummy's hands in the Mayan City
Open a locker containing a treasure in the Mayan Temple
Escape the crusher trap in Xibalba
Solve the sliding puzzle in the Ice Temple
Achieve First Kill in a multiplayer match
Achieve Best Score in a multiplayer match
Achieve Best K/D score in a multiplayer match
Won a multiplayer match without dying
Collect 100 gold statues in Treasure Hunt mode
Collect 50 silver statues in Treasure Hunt mode
Kill players 100 times using traps
Unlock all weapons in multiplayer mode
Unlock all characters in multiplayer mode
Earn 200 blessings in Treasure Hunt mode
Achieve all killing spree rewards in a single match
Unlock all automatic upgrades for all weapons
Achieve highest multiplayer rank
Win 10 times in Last Man Standing mode
Kill 10 different opponents in a Deathmatch
Finish a multiplayer match, using a self made Custom Class
Survive 100 enemy waves
Kill 5 players with a fire trap during one multiplayer match
Kill 500 Daru in survival mode